Strange characters in Debian with ISPConfig 2.2.2x

People:
In Debian have been finding several problems:
One of them is the codification. When installing ISPConfig in Debian 4, predominates UTF-8, in which the accents and cedillas are opaque. "Setting" iso 8859-1 in Firefox and in the IE Explorer, it solves the problem, but it is alone to change of page for the problem come back. What can be? Php.ini, http.conf?
Other problem is with Wordpress. Using plugin Nextgen, does not manage to give permissions for images folders (neither chmod 777, neither chmod g+rx, neither g+rw), immediately and when we get for magic's pass when trying to create an images gallery, nextgen refuses to create the miniature alleging that the image has more than 16M and in fact, does not have more than 30K. Did anybody already pass because of this and it knows the solution?
Thanks
Vladimir Antonini
Federal university of Paraná

People:
In Debian have been finding several problems:
One of them is the codification. When installing ISPConfig in Debian 4, predominates UTF-8, in which the accents and cedillas are opaque. "Setting" iso 8859-1 in Firefox and in the IE Explorer, it solves the problem, but it is alone to change of page for the problem come back. What can be? Php.ini, http.conf?